Mario is working in a cement factory where concrete is being fed into a series of four mixers located across two levels.
Three loads of concrete will fill a mixer. Any more, and the concrete spills over on to the truck driver below. Mario will have to open the valves on the mixers to release the concrete before the mixers fill up.
To reach the mixers Mario will have to hop on and off platforms moving between the two levels while being careful not to fall off.